1) Input validation error

Severity: Medium

CVSSv3: 6.5 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-0611

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of untrusted input within the Windows Remote Desktop Client when a user connects to a malicious server. A remote attacker can trick the victim to connect to a malicious RDP server and execute arbitrary code on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7, 8.1, 10, 10 1607, 10 1709, 10 1803, 10 1809, 10 1903, 10 1909, RT 8.1

Windows Server: 1803, 1903, 1909, 2008 R2, 2012, 2012 R2, 2016, 2019

CPE

• cpe:/a:microsoft:windows:10 1803:
• cpe:/a:microsoft:windows:10 1809:
• cpe:/a:microsoft:windows:10 1709:
• cpe:/a:microsoft:windows:10 1903:
• cpe:/a:microsoft:windows:10:
• cpe:/a:microsoft:windows:10 1607:
• cpe:/a:microsoft:windows:7:
• cpe:/a:microsoft:windows:8.1:
• cpe:/a:microsoft:windows:RT 8.1:
• cpe:/a:microsoft:windows:10 1909:
• cpe:/a:microsoft:windows_server:1803:
• cpe:/a:microsoft:windows_server:2019:
• cpe:/a:microsoft:windows_server:1903:
• cpe:/a:microsoft:windows_server:2016:
• cpe:/a:microsoft:windows_server:2008 R2:
• cpe:/a:microsoft:windows_server:2012:
• cpe:/a:microsoft:windows_server:2012 R2:
• cpe:/a:microsoft:windows_server:1909:

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0611

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.